The resistance of coatings and many types of materials to surface damage or penetration by relatively small impact forces may be determined with this light duty impact tester. This capability is especially useful in evaluating products and their finishes that will be mildly abused in households, offices, laboratories, etc., through years of normal use.

The impacter is a two-pound steel cylinder with a 0.50 in. (1.27 cm) diameter round-nosed end. Tolerance of weight is ±5%. This weight may be lifted to any desired height in a graduated guide tube approximately 16 in. (40.6 cm) high and then dropped, subjecting the specimen to an impact force of up to 28 inch-pounds. A 0.563 in. (1.43 cm) diameter hole in the base allows deformation of panels and other thin specimens.

This (extra Heavy-Duty) impact tester was developed in cooperation with the Society of the Plastic Industry (SPI) for evaluating impact resistance of rigid sheets of PVC (30-60 mils thick) and other plastics and materials exceeding the 160 inch-pounds limit of the Heavy-Duty Impact Tester.

• Graduated 102 cm (40 inch) guide tube with included 8 lb weight
  
• Redesigned arm on the base allows the impact tester to be used in tough applications
  
• Stop position clamp ensures you can always test at the same height, if needed
  
• Optional alignment tool helps to ensure the impact tester is lined up correctly (order separately)
  
• Maximum force of 320 inch-pounds with 8 lb weight
  
• 12.7 mm (0.500 in) diameter punch
  
• 16.3 mm (0.640 in) die
  
• Guide tube OD 44.5 mm (1.75 in), ID 39.6 mm (1.56 in)

This versatile device can be used to make tests for both flexibility and impact resistance. By simply reversing the impacter, the instrument can be used in a dual capacity to evaluate the flexibility of can stock coating during double seaming and to test its impact resistance in handling.

A 1/8" (0.32 cm) steel rod (mandrel) is mounted at the front of the base and a butt hinge made of two steel blocks is attached to the base below the guide tube. When the hinge is closed, it creates a wedge shape gap between the upper and lower parts ranging from 1/8" at the hinged end to zero thickness at the free end. To make a bend test, the coated panel (30-31 gage tin plate) is first bent double over the 1/8 inch rod. The bent panel is placed between the parts of the hinge. Then the impact tool, flat face down, is dropped from a height of one or two feet onto the upper part of the hinge. The cylindrical fold in the panel is squeezed into a conical shape. For impact studies, the top block is leveled with the plug removed exposing a .563" (1.43 cm) hole. The 0.50" (1.27 cm) diameter, round-nosed end of the 4 lb. weight may now be dropped from any height along the scale graduated from 0 to 160 inch-pounds.

Comes Standard with: Base with arm support; Guide tube with collar; Scale in inches; Four pound weight; Punch; Operating instructions.